diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index 399ad3429a..8e23434b5b 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -2171,6 +2171,12 @@ function change_database_data(&$no_updates, $version)
 				}
 			}
 
+			// Disable receiving pms for bots
+			$sql = 'UPDATE ' . USERS_TABLE . '
+				SET user_allow_pm = 0
+				WHERE user_type = ' . USER_IGNORE;
+			$db->sql_query($sql);
+
 			$no_updates = false;
 		break;
 	}
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 67ebb8b1c5..0575b58d92 100644
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -1859,6 +1859,7 @@ class install_install extends module
 				'user_timezone'			=> 0,
 				'user_dateformat'		=> $lang['default_dateformat'],
 				'user_allow_massemail'	=> 0,
+				'user_allow_pm'			=> 0,
 			);
 
 			$user_id = user_add($user_row);